Runco DTV-992 manual Raster Shift Adjustment

Random Access Adjustment Mode

Raster Shift Adjustment

The green raster must be centered both horizontally and vertically on the center of the CRT surface. To center the green raster, look into the green lens and use the control disc to move the raster.

CAUTION

It is necessary to look into the lenses to perform these adjustments. To avoid eye discomfort while looking into the lenses, reduce the contrast and gradually increase the brightness level until the raster becomes visible on the face of the CRT.

ENTER will select green raster shift adjustment.

EXIT returns to random access adjustment mode menu.

Warning : In order to ensure maximum CRT longevity and to avoid CRT damage, do not shift the raster outside the phosphor area of the CRT.

To start the adjustment, use the control disc to highlight Raster shift and press ENTER to display the green raster on the phosphor.

GEOMETRY

HPHASE RASTER SHIFT

LEFT - RIGHT (E-W)

TOP - BOTTOM (N-S)

SIZE

V LINEARITY

COARSE SHIFT

GREEN HORIZONTAL

GREEN VERTICAL

RED VERTICAL

BLUE VERTICAL

Select with or then <ENTER> <EXIT> to return.

forbidden area

projected raster

crt faceplate border

phosphor border

Press EXIT to return to the Geometry menu.

Note : Horizontal and Vertical shifts for Red and Blue should end up with a setting close to 50%. If these settings are sig- nificantly greater or lesser than 50%, contact a RUNCO authorized service technician.

correct raster position

wrong raster position

6-7